%I

%S 820,6652,7300,7372,7380,7382,7383,7384,7385,7386,7387,7388,7390,7399,

%T 7408,7417,7426,7435,7444,7462,7543,7624,7705,7786,7867,7948,8110,

%U 8839,9568,10297,11026,11755,12484,13942,20503,27064

%N Numbers n such that number of 1's in base 9 is 4.

%t Select[Range[30000],DigitCount[#,9,1]==4&] (* _Harvey P. Dale_, Mar 27 2016 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_